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Proposed but not Implemented Missions

Satellite Name Sponsor Exp.Life Time Purpose
GRASP NASA   Positioning, geodesy
Luna 25 Roscosmos ≥ 1 yr Lunar Lander in Boguslavsky crater near Lunar South Pole equipped with a Lunar Laser Retroreflector
MicroSCOPE CNES 2 yrs Equivalence principle tests
NPOESS NOAA, NASA, DoD 7 yrs Sea surface height
VCL NASA 2 yrs Earth observation